feat(sqlsmith): updates and deletes

[kwannoel]

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What's changed and what's your intention?

Around ~500 lines are from the snapshot tests.

Sqlsmith currently does the following:

1. Generates base tables.
2. Generate inserts
3. Generates mviews on top of these base tables.
4. Test batch + stream query.

After this PR:

1. Generates base tables.
2. Generate inserts
3. Generates mviews on top of these base tables.
4. +++ Generate updates (if have pk) / delete + inserts (if no pk)
5. Test batch + stream query.

I found that interleaving inserts, updates and deletes between stream queries is complicated to debug. I have left it out for now. It can be done in the future.

Updates and deletes are generated by:

1. Finding PK of tables.
2. Selecting a subset of inserts.
3. Selecting their PK, and generating new values for these rows.
4. If they do not have PK, just delete some rows, generate some new inserts.

Closes #9824.

Checklist For Contributors

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• I have demonstrated that backward compatibility is not broken by breaking changes and created issues to track deprecated features to be removed in the future. (Please refer to the issue)
• All checks passed in ./risedev check (or alias, ./risedev c)

Checklist For Reviewers

• I have requested macro/micro-benchmarks as this PR can affect performance substantially, and the results are shown.

Documentation

• My PR DOES NOT contain user-facing changes.

Click here for Documentation

Types of user-facing changes

Please keep the types that apply to your changes, and remove the others.

• Installation and deployment
• Connector (sources & sinks)
• SQL commands, functions, and operators
• RisingWave cluster configuration changes
• Other (please specify in the release note below)

Release note

[codecov]

Codecov Report

Merging #9985 (64d233b) into main (121e5a1) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #9985      +/-   ##
==========================================
- Coverage   71.09%   71.09%   -0.01%     
==========================================
  Files        1230     1230              
  Lines      210331   210334       +3     
==========================================
  Hits       149536   149536              
- Misses      60795    60798       +3     

Flag	Coverage Δ
rust	71.09% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/sqlparser/src/ast/mod.rs	85.65% <0.00%> (-0.21%)	⬇️

... and 2 files with indirect coverage changes

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[kwannoel]

Moved to dml.rs

[kwannoel]

This contains the update and delete generation logic.

[kwannoel]

New commits are solely from rebasing.